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Surface stack kick sheet
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Kick Control worksheet, release 1a, issued 20 Oct 08. Audit version.
Sponsored and approved by Aberdeen Drilling Schools – the home of well control training
Pre-kick input – well information
Pre-kick input – string and mud data
4.5″ 9.5 ppf4.5″ 10.5 ppf4.5″ 11.6 ppf4.5″ 13.5 ppf4.5″ 15.1 ppf5″ 11.5 ppf5″ 13 ppf5″ 15 ppf5″ 18 ppf5″ 21.4 ppf5″ 23.2 ppf5″ 24.1 ppf5.5″ 14 ppf5.5″ 15.5 ppf5.5″ 17 ppf5.5″ 20 ppf5.5″ 23 ppf5.5″ 26.8 ppf5.5″ 29.7 ppf5.5″ 32.6 ppf5.5″ 35.3 ppf5.5″ 38 ppf5.5″ 40.5 ppf5.5″ 43.1 ppf6.625″ 20 ppf6.625″ 24 ppf6.625″ 28 ppf6.625″ 32 ppf7″ 17 ppf7″ 20 ppf7″ 23 ppf7″ 26 ppf7″ 29 ppf7″ 32 ppf7″ 35 ppf7″ 38 ppf7″ 42.7 ppf7″ 46.4 ppf7″ 50.1 ppf7″ 53.6 ppf7″ 57.1 ppf7.625″ 24 ppf7.625″ 26.4 ppf7.625″ 29.7 ppf7.625″ 33.7 ppf7.625″ 39 ppf7.625″ 42.8 ppf7.625″ 45.3 ppf7.625″ 47.1 ppf7.625″ 51.2 ppf7.625″ 55.3 ppf7.75″ 46.1 ppf8.625″ 24 ppf8.625″ 28 ppf8.625″ 32 ppf8.625″ 36 ppf8.625″ 40 ppf8.625″ 49 ppf9.625″ 32 ppf9.625″ 36 ppf9.625″ 40 ppf9.625″ 43.5 ppf9.625″ 47 ppf9.625″ 53.5 ppf9.625″ 58.4 ppf9.625″ 59.4 ppf9.625″ 64.9 ppf9.625″ 70.3 ppf9.625″ 75.6 ppf10.75″ 32.75 ppf10.75″ 40.5 ppf10.75″ 45.5 ppf10.75″ 51 ppf10.75″ 55.5 ppf10.75″ 60.7 ppf10.75″ 65.7 ppf10.75″ 73.2 ppf10.75″ 79.2 ppf10.75″ 85.3 ppf11.75″ 42 ppf11.75″ 47 ppf11.75″ 54 ppf11.75″ 60 ppf11.75″ 65 ppf11.75″ 71 ppf13.375″ 48 ppf13.375″ 54.5 ppf13.375″ 61 ppf13.375″ 68 ppf13.375″ 72 ppf16″ 65 ppf16″ 75 ppf16″ 84 ppf16″ 109 ppf18.625″ 87.5 ppf20″ 94 ppf20″ 106.5 ppf20″ 133 ppf8.625″ 44 ppf |
5 |
4.276 |
Select the casing in use
Drillpipe OD and ID
inmm |
6500 |
3 |
Casing shoe TVD
ftm |
HWDP ID
6500 |
350 |
ftm |
Casing shoe MD
HWDP length
17 |
psi/ftSG or kg/lppglb/ft3ppbkPa/m |
8 |
2.8 |
inmm |
Casing shoe strength gradient
DC OD and ID
12.25 |
inmm |
160 |
ftm |
Hole diameter
DC length
4.3 |
GallonsBarrelsLitresCubic metres |
30 |
350 |
psiPakPaMPa |
Pump output per stroke
SCR strokes/min and pressure
Post-kick data
14 |
psi/ftSG or kg/lppglb/ft3ppbkPa/m |
1000 |
Drilling fluid density
SIDPP
psiPakPaMPa |
8000 |
1200 |
Well TVD
ftm |
8000 |
26 |
lm3bblft3 |
Well MD
Influx volume
Click here when any values are modified to update the result.
Calculations
Bottom hole pressure after closing the BOP
New mud gradient to balance bottom hole pressure
Mud weight equivalent of the gradient
Length of drillpipe in the hole
Surface to bit volume (drillstring volume)
and the number of strokes and time for the Surface to bit (kill Phase 1) volume.
Open hole length
Calculate the annular volume between open hole and drill collars.
Calculate the annular volume between open hole and drill pipe.
Calculate the annular volume between casing and drill collars.
Calculate the annular volume between casing and drill pipe.
Calculate the bit to shoe open hole annular volume
Calculate the shoe to choke annular volume
End of Phase 2 comes after pumping heavy mud down the drillstring and up to the casing shoe. The open hole is now full of heavy mud.
Strokes and time for Phase 2;
End of Phase 3 volume. This is completed after puming the annulus volume (“bottoms up”). The influx is all out and all that remains is to displace out the light mud that was originally in the drillstring at the start of the well kill.
Strokes and time for Phase 3;
End of final phase; complete the circulation.
Strokes and time for Phase 4;
Calculate the initial and final circulating pressures
Calculate the pressure drop per stroke
Calculate the number of strokes at 10% intervals during Phase 1.
Calculate the pressure for the number of strokes without units
Results
Bottom hole pressure
Kill mud gradient
Kill mud weight
Initial circulating pressure
Final circulating pressure
Phase 1, surface to bit
Strokes; Time;
Phase 2, bit to shoe
Strokes; Time;
Phase 3, ends after “bottoms up”
Strokes; Time;
Phase 4, complete circulation
Strokes; Time;
Phase 1 table and graph; oilfield units
Strokes psi
Phase 1 table and graph; metric units
Strokes kPa
Worksheet references
Copyright Drillers.com Inc.
The variable names used in all Drillers.com worksheets can be found at www.drillers.com/download/standardvariablenames.doc .
Aberdeen Drilling Schools. Well Control for the Rig-Site Drilling Team.
Version 1 of this worksheet was released on 3 October 2008 by Steve Devereux.
